I have one. I use it for heat shrink insulation on electronics projects and heat shrink plastic film on rc planes. But I agree, a hair dryer works nearly as well. When I bought the heat gun 20 years ago they were not making these 1500 watt hair dryers.
I don't agree about the wind being much of an issue. You can hold the heat gun or hair dryer an inch or so from the faucet. It would have to be a lot of wind to interfere.